Coffee-percolator.



L. WoJ-IDKOW.

COFFEE PBRGOLATOR.

APPLICATION FILED FEB. 2o, 1911.

1,036,767, Patented Aug.27,1912.

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Patented Aug. 27, 1912.

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L. WUJIDKOW. COFFEE PERCOLATOR. APPLICATION PILBD PEB. zo, 19111Patented Aug. 2'?, 1912.

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COLUMBIA PLANOGRAPH co., WASHINGTON. `|1I C.

UNiTED sTATEs Parenti'v onirica.

LOUIS WOJIDKOW, OF BROOKLYN, NEW YORK, ASSIGNOR TO NEW YORK STAMPINGCOMPANY, 0F BROOKLYN, NEW YORK, A CORPORATION OF NEW YORK.

COFFEE-PERCOLATOR.

To all whom t may concern.'

Be it known that I, LoUrs VVoJIDKow, a citizen of the United States,residing at Brooklyn, in the county of Kings and State of New York, haveinvented certain new and useful Improvements in Coffee-Percolators, ofwhich the `following is a full and concise specification.

The invention is a coffee percolator and consists in the arrangement,form and com- .bination of parts to provide a portable percolator, theseveral parts of which when assembled may be handled as a unit withoutrisk of the coffee container becoming accidentally separated from theliquid reservoir, or from the strainer, or of the cover becomingseparated from the coffee container', the said parts being allpositively held together.

It is a further object of the invention to provide a percolator in whichthe coii'ee container is readily separable from the strainer and thecontainer cover capable of adjustable connection to the strainer wherebythe container may be clamped between the strainer and the cover; also toprovide a form of bayonet joint connection between the pot andstrainer,whereby the latter with its attached parts may be readilyseated upon and removed from the pot, and when in place on the pot issecurely locked thereto More specifically, the invention comprises anovel means in combination with. the bayonet joint connection referredto, where by the locked and unlocked positions of the pot and strainerare mechanically ascertained; a novel form of spreader or sprinkler forspraying the liquid over the coii'ee; a novel mode of attachment of thespreader to the strainer' and to the cover, and a means` for draininginto the pot any water of condensation or liquid from other source,which may be on the outside of the coffee container.

These and other objects and features of the invention will more fullyappear in connection with the description of the apparatus shown in theaccompanying drawings, in which:

Figure 1 is a central vertical section of the assembled percolator takenon the line IMI of Fig. 2. Fig. 2 is a top plan showing the tilt/er trayand attached spreader, in posit-ion on the pot; the globe and coverSpecification of Letters Patent.

Application filed February 20, 1911.

Patented Aue'. 27, Y1912.

Serial No. 609,613.

being removed. Fig. 3 is a view incross section through the assembledpercolator on the line IIL-III of Fig. l looking up.` Fig. at is adetail view in side elevation illustrating the bayonet joint connectionof the filter tray to the pot. Fig. 5 is a detail top plan, part-ly insection, of one of the tray handles, showingtheattachment of the same tothe tray and the clip or projection thereon which forms part of thebayonet joint connection shown in Fig. 4. F 6 is an eleva tion sho-wingthe pot with the circulating `tuloe in position `therein and the iltertray vabout to be passed onto t-he tube and onto its seat on the pot.Fig. 7 is an elevation show-- ing the filter tray with the spreader inposition on the pot, and showing the globe about to be passed over thespreader and onto its seat on the filter tray. Fig. 8 is an elevationshowing all parts assembled eX` cept the cover, which latter is about tobe` screwed down into placeon the globe by means of a screw attached tothe spreader. Fig. 9 is an elevation showing the globe clamped betweenthe cover' and tray, and the two latter' screwed together, so that allthree as a unit may be removed from or placed on the pot, which is alsoshown.

The percolator as shown is composed of live separable pieces orsections, to wit: a pot or reservoir l for the liquid, a filter tray `orstrainer 2 supported on the pot, a globe or coifee container 3 supportedon the filter tra-y and usually made of glass, a cover 4 closing the topof the globe, and a tubular member 5 within the pot for causing thecirculation of the liquid. These pieces are assembled and lockedtogether so as to form in effect a unitary structure, in which none ofthe parts can be accidentally disconnected from any of the others eventhough the -percolator be upset or turned upside down, while the globeor coffee container itself is clamped by and between the cover' and thefilter tray in such manner thatA these three elements alone may betreated as a unit, and as suoli, removed therefrom, or placed upon andlocked to the pot.

The pot l is divided by a disk or plate 6, into a lower chamber 7, whichby virtue of its proximity to the fire constitutes a prime steamgenerating chamber' and an upper chamber 8, which serves as thereservoir for the liquid. The plate G as usual is rigid with andsupports the tubular member 5 17 of any suitable design.

and rests by means of a shouldered annular flange 9, upon a shoulder 1()formed on the inside of the pot. The chambers 7 and S communicatethrough a short pipe 11 which passes through the plate 6, opening at itsupper end into the chamber 8 and at its lower end into the chamber 7near the bottom of the latter. The chamber 7 is flared outward from topto bottom to provide a large bottom or heating surface 12, therebyadapting the percolator for use in a stove of any kind.

Liquid entering chamber 7 from chamber 8 by way of the pipe 11 is led bythe latter to the bottom 12 of the pot where it is highly heated and inpart turned to steam, which rises in the tube 5 carrying with it some ofthe liquid from the steam chamber. The tube 5 opens at its upper end 13into the container 3 above the level of the coffee or other substancetherein from which the infusion is to be prepared. Vithin the containerand opposite the open end of tube 5 is a spreader or deflector 14against which the stream of liquid delivered from the tube 5 visprojected and by means of which it is subdivided and sprayed over thecoffee passing through the latter and through the filter tray orstrainer 16 on which the coffee is supported, into the upper chamber 8of the pot 1, thence again passing into chamber 7 and up tube 5,repeating the circuit as long as steam is generated or'until the liquidis drawn off. For drawing off the liquid there is shown a spout 17, butit will be understood that Vin place of the spout there may besubstituted a faucet or any other suitable tap. The pot has a handleThefilter 16 may be a wire netting'secured to the body of the filtertray 2 as by means of a crimp 18, or it may be a foraminated plateintegral with or otherwise secured to the tray body. While the coffeecontainer 3 is preferably made of glass'as shown in the drawings, it maybe of any suitable material and it is desirably formed withsubstantially cylindrical seating lips or margins at its opposite ends,of equal diameter, and approXimately equal to the diameter of theforaminous surface of the filter tray upon which it is seated. Thefilter plate is fiat so that when the globe is placed therein the coeegrains will not leak out into the tray or pot. The tray body or rimslopes upward and outward from the globe seat on the filter plate, andcomprises a flat, horizontal, shoulder or fiange 19 by which the tray issupported on an inward turned flat fiange 20 formed on the rim of thepot, the bearing thereon being continuous around the circumference ofthe pot and uninterrupted by the devices for locking the tray to thepot. The shoulder 19 is sufficiently remote from the globe 3 to permitwater of globe a trough 44 in which liquid passing down the outside ofthe globe, or liquid leaking under the globe from the inside thereof,may collect. A hole 45 through the wall 41 provides for drainage intothe pot of any vliquid in the trough 44. The inclined wall ,41 furtherserves to guide the globe to its vsea-t on the tray.

The bayonet joint attachment of the tray to the pot is provided in partby an annular bead or flange 22 (see Figs. 1 and 4) on the outside ofthe pot near the top thereof,

which is interrupted or discontinued at diametrically opposite points 23(see Fig. 3). so that in eect there are two semi-annular beads. A pairof clips 25 is secured by means of arms or fins 29 to the under side ofthe tray rim at diametrically opposite points of the same. AThese clipsare of less width than the interruptions or openings 23 of the bead 22,so that they may enter the same, and their ends are turned inward tointerlock with the bead, so that they cannot be forced over it. To seatthe tray in the pot it is placed therein with its cylindrical wall 21entered within the pot opening and the'ends of the clips resting on topof the beads 22. Then, by rotating the tray as thus placed, the clips 25ride on the beads until they drop through the openings 23,

`which allows the flange 19 above referred to `to come into its bearingon the pot fiange 20,

and whenv further rotated the clips will embrace the beads and thussecure the tray to the pot body. It will be seen that the vertical wall21 is longer'than the width of the bead 22, so that it will form abearing in the pot opening to guide and supportl the tray in its rotarymovement before the clips have entered the openings 23. The bead at oneside of each of the openings 23 has a downward turn or offset 26, sothat, after the tray has been seated and turned 180, the clips 25 strikeand are` stopped by offsets 26, to prevent further rotation of the trayand indicate that the tray is securely locked to the pot. To remove tlietray from the pot. the operation is reversed, that is to say the tray isturned counter-clockwise until, after a 180o turn, the clips strike theother sides of the offsets 26, being thereby arrested in the position inwhich they register with the 4openings 23, whereupon the tray may belifted off of the pot. Quick and certain attachment and detachment ofthe parts is thus provided, and it will be noted that the presence ofthe offsets 26, provides for a mechanical, as distinguished from a merevisual, indication of the locked and unlocked positions of the tray. Itwill be understood however that the construction of the bayonet jointmay be considerably varied, and that no matter how modied, the structurewill nevertheless fall within the scope of this invention if theattachment to the pot is by means of a bayonet joint or has thedistinguishing characteristics thereof.

In the preferred form the bayonet joint clips 25 are extended upwardlyas integral arms 27 which are bent or girdled around buttons 28 of heatinsulating material, fitting grooves 29 therein and forming suitablehandles therewith, by which the tray may be lifted. It is of advantageto make the clips and handle arms in a single piece, since by a singleoperation both may be stamped, and likewise by a single operationattached to the tray. Furthermore the two elements being in one, eachprovides an en larged bearing for the other on the tray, and theattachment of each is thus rendered the more secure. The tray handlesmay ho-wever be separate from the clips of the bayonet joint, and incertain forms of the invention it may be preferable to construct andattach the two separately.

Attached to the strainer tray at a point in alinement with the tube 5 isa tubular member 3l for supporting the spreader 14 above referred to andfor connecting the strainer with the cover 4. The diameter of the tube31 permits it to be passed over the tube 5, and the latter is of reduceddiameter for the portion thereof within the tube 3l; the point ofreduction in diameter presenting a shoulder 32 which serves as anadditional support for the tray.

The spreader 14 is supported on the divergent arms 33 rigidly secured tothe top of the tube 3l, and comprises two conical or dome shaped plates34 and 35, of different pitch, the upper resting at its periphery on thelower, so as to form between central portions of the plates, a receivingchamber into which the pipe 5 opens. The upper plate 34 (see Fig. 2) hasa skirt which is radially corrugated or fluted and the lower plate has aplain conical surface, so that between the two plates there is formed asystem of radially divergent channels, tapering toward the peripheriesof the plates, whereby the liquid is sprayed in all directions over thecoffee from the center of the` globe to the walls thereof. The spreadersupporting arms 33 are shown as passing through both plates 34 and `35and as turned over at their ends against the upper side of plate 34, butother secure means of attachment of the spreader to the tube 31, may beemployed` with equal effect. j

Rigidly secured to the top of the spreader, centrally of the globe 3, isan upright stud or screw 36 adapted to be engaged by a correspondingfemale screw or internally threaded sleeve 37 attached to and dependingrigidly from the inside of the cover 4 centrally of the latter. Thecover has a suitable handle 39 whereby it can be readily rotated toscrew the sleeve 37 down onto the screw 36 so as to seat the cover onthe globe and clamp the latter between the cover and the tray. Thethreaded sleeve 37 is fitted within an outer sleeve 46 which terminatesin a flared portion 47 protruding below the end of sleeve 37 for thepurpose of centering` the screw 36 with the sleeve 37, and for furtherfacilitating the alinemeut of the two screws, the screw 36 is providedwith a pointed or rounded tip. The cover has a depending flange 42adapted to embrace the globe, and has a shoulder 43 which may sitdirectly upon the upper edge of the globe, or between which and theglobe may be interposed lugs 43 attached to the cover and serving as arestricted and easy bearing for theY cover on the globe when the coveris being turned onto the screw 36.

It will be noted that the percolator above described does not depend onfrictional engagement to hold the globe to the tray nor f the cover tothe globe; nor upon springs or similar attaching devices likely to getdistorted and out of order. The globe is posi tively held to the tray,and consequently to the pot when the tray is locked to the latter, andsimilarly the cover is positively locked to the globe. No part can bewithdrawn 4from the other unless the parts have pre viously beenunlocked, and to make certain that the parts are locked beforemanipulating the apparatus, the screws on the tray and cover are madelong enough to engage before the cover seats on the glass, thus cans ingthe cover to sit obliquely and uncertainly on the device, `indicatingthereby its unlocked condition. The pot may be readily disconnected fromthe tray and the other parts without dismantling the latter', and it isan advantage of the new construction that the pot and tray can bedisconnected more readily than the cover can be disconnected from theglobe, for it is the custom to charge or recharge percolators of thisgeneral type with water that has been already heated and which if pouredinto the glass globe is most likely to crack it. The screw fastening ofthe cover, while having a quick pitch, nevertheless requires severalcomplete revolutions to become unfastened, while the tray requires onlya half revolution and moves easily, so that the water, whether hot orcold, will be most readily and naturally poured directly intothe potrather than into the glass globe. The globe, moreover, is of a shapethat it can be cheaply produced and is adapted to be used either end up,regardless of whether it fits the tray accurately or not, and is alsovery easily cleaned, since it can be so readily disconnected.

I claim:

l. In a coffee percolator, a pot or reservoir for the liquid, a filtertray upon the pot, a coffee container open at both ends, `separable fromthe tray and supported thereon, a cover for the coffee container, andmeans for det-achably securing the container cover to the tray with thecontainer locked between the two. Y

2. In a coffee percolator, a pot or reservoir for the liquid, a filtertray seated on the pot, a coee container open at its botto-m and seatedon the tray so as to be supported by the latter on the pot, thecontainer being removable from the tray, and means engageable with theupper part of the container to clamp the container down upon the tray.

3. In a coffee percolator, a potk for the liquid, a filter traysupported on the pot, a coffee container open at both ends, separablefrom the tray and supported thereon, a cover for the coffee container,and a screw connection for detachably securing the cover to the traywith the container therebetween.

4. In a coffee percolator, a pot for the liquid, a strainer, means fordetachably securing the strainer to the pot, a coffee con tainer open atboth ends, separable from the strainer, a cover for the coffeecontainer, and means for detachably securing the container cover to thestrainer with the container locked between the two. V i

5. In a coee percolator, a pot for the liquid, a strainer, a coffeecontainer o-pen at both ends separable from the strainer, a cover forthe coffee container, means for detachably securing the container coverto the strainer with the cont-ainer locked between the'two, and meanswhereby the strainer with the coffee container and cover may as a unitbe secured to and removed from the pot.

46. In a coffee percolator, a pot for the liquid, a filter tray having abayonet joint connection to the pot, a coffee container open at bothends separable from the tray and supported thereon, a cover for thecoffee container, and means for detachably securing the container coverto the tray with the container therebetween.

7. In a coffee percolator, a filter tray, a coffee container open atboth ends, separable from the tray and supported thereon, a cover forthe coffee container, a screw fast to the tray and threaded meansintegral with and located centrally of the cover for engaging said screwso that the cover may be screwed down upon the container and the latterthus clamped between thecover and the tray.

8. In a coffee percolator, a pot for the liquid, a filter traydemountably carried by the pot, the filter tray having a projectionwhich depends within the pot opening, and a bayonet yjointconnection inpart formed on the pot and in part on the tray, for locking the pot andtray together, said depending projection on the tray being of sufficientlength to serve as a centering means for the tray on the pot before themembers of the bayonet joint connection can be brought into coperationwith each other, in combination with means for confining coffee on thetray, and means for producing circulation of the liquid therethrough.

9. In a coffee percolator, a pot for the liquid, a strainer demountablycarried by the pot and means for locking the strainer to the pot, saidlocking means being comprised in part of a. circumferential bead orflange on the pot which serves as a seat on which the strainer may ridewhen turned on the pot, the strainer being provided with one or moreyprojections .for supporting it on said bead, and the bead being'discon`tinued at points on the circumference of the pot to permit saidprojections to drop lower than the bead, whereupon, upon further rotarymovement of the strainer on the pot, they projections are carried underthe bead and serve to prevent the strainer from being lifted from thepot except after proper rotary movement of the same.

10. In a coffee percolator, a pot for the liquida strainer demountablycarried by the pot, and means for locking the strainer to the pot, saidlocking means being com' prised in part of a circumferential bead orflange on the pot which serves as a seat 'on which the strainer may ridewhen turned on the pot, the strainer being provided with one or moreprojections for supporting it on said bead, and the bead being'discontinued at points on the circumference of the pot to permit saidprojections to drop lower than the bead, whereupon, upon further rotarymovement-.of the strainer on the pot, the projections are carried underthe bead and serve to prevent the strainer from being lifted from thepot except after proper ro tary movement of the same, and a stop in thepath of the projection below the bead, to arrest rotation of thestrainer on the pot, when the projection reaches the point where thebead is discontinued, thus determining the position `from which thestrainer is to be lifted in removing the same.

ll. In a coee percolator, a pot for the liquid, a strainer demountablycarried by the pot, and means for locking the strainer to the pot, saidlocking means consisting of a bead or iiange on the circumference of oneof said elements, and cooperating projections on the other element, saidprojections i mitting relative rotary movement of pot and strainer, andsaid bead being discontinuedl at points to permit passage of saidprojections to the other side of the bead, whereupon, upon furtherrelative rotary movement of pot and strainer, said projections passbehind said bead on said other side thereof, and prevent lifting of thestrainer from the pot.

12. In a coffee percolator, a pot or reservoir for the liquid, and astrainer having a bayonet joint connection with the pot or reservoir,said joint comprising a horizontal bead or flange on the pot which isinterrupted at one or more points on the circumference of the pot topresent opposed bead or flange extremities with spaces between the same,and one or more projections on the strainer, said projections being ofless width than the spaces between the opposed fiange or beadextremities, and abutting said bead or flange and to prevent seating orwithdrawal of the strainer except when. the strainer is turned to bringthe projections thereon to points where the bead or flange isdiscontinued or interrupted, and offsets from said bead or flange whichwhen engaged by said projections define the locked and unlockedpositions of the strainer.

13. In a coffee percolator, a pot for the liquid, a strainer demountablycarried by the pot, means for locking t-he strainer to the pot, saidlocking means being comprised in part of a circumferential bead orflange on the pot which serves as a seat on which the strainer may ridewhen turned on the pot, the strainer being provided with one or moreproject-ions for supporting it on said bead, and the bead beingdiscontinued at points on the circumference of the pot to permit saidprojections to drop lower than the bead, whereupon, upon further rotarymovement of the strainer on the pot, the projections are carried underthe bead and serve to prevent the strainer from being lifted from thepot except after proper rotary movement of the same, and a seatingsurface, forming part of the strainer, to engage and ride on the upperside of said bead-after said projections have passed to the lower sideof the bead.

14. In a coffee percolator, a pot for the liquid, a strainer forsupporting the coffee over the pot, and a handle for the strainer; thehandle consisting of a horizontally dis posed button or finger piece ofheat insulating material having a peripheral groove, and a flat strip ofmetal, secured with one of its faces against the side of the strainerand encircling the button or finger piece, with one of its edges in thegroove in the finger piece.

15. In a coffee percolator, a pot for the liquid, a strainer and ahandle for the strainer consisting of a horizontally disposed button orfinger piece of heat insulating material having a peripheral groove, anda fiat strip of metal, secured with one of its faces against the side ofthe strainer and encircling the button or finger piece, with one of itsedges in the groove in the finger piece, said metal strip of the handlehaving also a projection for interlocking the strainer with the potbody.

16. In a coffee percolator, a pot for the liquid, a filter tray and acoffee container thereon, a circulation tube extending from the`interior of the pot, through the tray and terminating in the container,a spreader for the liquid emitted from the circulationtube, saidspreader being situated in the container opposite the mouth of thecirculation tube and supported on arms rigidly connected to the tray, incombination with means removably engaged with said spreader t-o hold thecontainer to the tray.

17. In a coffee percolator, a pot for the liquid, a coffee container, acirculation tube extending from the pot into the container, and aspreader for t-he liquid therefrom, the spreader consisting of twoconical or dome shaped plates of different pitch, the plate of greaterpitch being placed above, and substantially in contact at its peripherywith the lower plate, so that between the central portions of the platesthere is a chamber, into which the circulating tube opens, one of thespreader plates being fiuted or corrugated radially to provide divergentdistributing channels through which the liquid is sprayed into thecontainer.

18. In a coee percolator, a pot for the liquid, a filter tray providedwith an upstanding pipe, a circulation tube extending from the pot intothe pipe, and a spreader for the circulated liquid supported on armsrigidlv connected to said upstandmg pipe, a glass globe on the tray, anda cover therefor having screw connection with the spreader.

19. In a coffee percolator, a pot for the liquid, a coffee container andstrainer, a circulation tube extending from the pot through the strainerinto the container, a spreader or -deflector at the mouth of the tubeconsisting of two plates between which the circulating tube opens, atubular member supported by the strainer and embracing the circulatingtube, said tubularmember having arms attached thereto, which arms passthrough both of the spreader plates and are locked against the outer ofthe plates.

20. In a coffee percolator, a pot for the liquid, a coffee container andstrainer, the container having an open upper end, a circulation tubeextending from the pot through the strainer into the container, aspreader for the circulated liquid mounted within the spreader, the saidmembers being adaptedl for mutual engagement whenthe cover and cont-amerare in normal position. f

2l. In a coffee percolator, a pot, a coiteeI container and strainer, acirculation tube extending from thejpot through the strainer intro thecontainer, a spreader secured within the container, a threadedattachment member secured to the spreader, a cover for the container, athreaded member on the inside of the cover engaging the member on thespreader, one of said members having a iaredextension for engaging andcentering the same with the other. Y a

22. In a coffee percolator, 'a pot for the liquid, a coffee containerand strainer, a circulation tube extending from the pot through thestrainer into the container, a spreader at the mouth of thetube, a screwsecured to the opposite side of the spreader, a cover for the container,a tubular threaded member projecting from the inside of the cover towardthe screw o-n the spreader and threaded onto said screw to secure thecover to the container, and means for causing the screw and threadedcover member to aline themselves when the coveris placed on thecontainer.

23. In a coffee percolator, a pot for the liquid and a container for thecoifee, a filter tray having a seat for the container withinV the pot,and formed with a rim or wall rising upwardly from the container and outof the tray upon thepot rim. Y

24. In a coffee percolator, a pot for the liquid, a ilter tray seated onthe pot, and a i coffee container carried by the filter tray, the

tray having an upward and outward flared rim, removed atrits peripheryfrom the container to provide between it and the container a trough forthe collection of waste liquid, and provided with a. drainage hole fromsaid trough into the pot.

25. In a coffee percolator, a pot for the liquid, a coffeetray-connected thereto by a bayonet joint, a glass globe seated on thetray and a cover for the globe connected to the tray and globe open atboth ends'by a screw thread joint.

In testimony whereof, I have signed this specification in thev presenceof two wit* nesses.

Louis WoJiDKoW.

Vitnesses FRED C. VoJinxow, CLIFFORD H. KLOS.

Copies of this platent may be obtained for live cents each, byaddressing the Commissioner of Patents, Washington, D. C.

